diff --git a/cfg/gnu.cfg b/cfg/gnu.cfg
index 8e7b80349..94cc0eac1 100644
--- a/cfg/gnu.cfg
+++ b/cfg/gnu.cfg
@@ -25,23 +25,7 @@
     <leak-ignore/>
   </function>
   <!-- void *__builtin_memset(void *s, int c, size_t n); -->
-  <function name="__builtin_memset">
-    <returnValue type="void *"/>
-    <noreturn>false</noreturn>
-    <leak-ignore/>
-    <arg nr="1">
-      <not-null/>
-      <minsize type="argvalue" arg="3"/>
-    </arg>
-    <arg nr="2">
-      <not-uninit/>
-    </arg>
-    <arg nr="3">
-      <not-uninit/>
-      <not-bool/>
-      <valid>0:</valid>
-    </arg>
-  </function>
+  <define name="__builtin_memset" value="memset"/>
   <!-- long long atoq(const char *nptr); -->
   <function name="atoq">
     <returnValue type="long long"/>